/Engine/Source/Editor/UnrealEd/Public/Kismet2/ComponentEditorUtils.h
Is the instance component is editable
static bool CanEditComponentInstance ( const [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * ActorComp, const [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * ParentSceneComp, bool bAllowUserContructionScript )